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  • 16-02-2022
  • Mathematics
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Prove that 27 to the 10th-9 to the 14th is divisible by 24

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semsee45
semsee45 semsee45
  • 16-02-2022

Answer:

[tex]27^{10}-9^{14}\\\\=(3^3)^{10}-(3^2)^{14}\\\\=3^{30}-3^{28}\\\\=3^{(27+3)}-3^{(27+1)}\\\\=3^{27} \cdot3^3-3^{27}\cdot3^1\\\\=3^{27}(3^3-3^1)\\\\=3^{27}(27-3)\\\\=3^{27}\cdot24[/tex]

[tex]3^{27}\cdot24[/tex] is divisible by 24, hence proving that [tex]27^{10}-9^{14}[/tex] is divisibe by 24

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